Varian H R <br/><br/>
Intermediate microeconomics : a modern approach 
Varian H R 
 - Ed 6 
 - New Delhi  New Delhi, W W Norton & Company  2003 
 - v  
<br/><br/><label>ISBN: </label>81-7671-040-7 
<br/><br/><label>Source: </label>Textbook